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authorMike Christie <mchristi@redhat.com>2018-01-15 14:37:59 -0600
committerNicholas Bellinger <nab@linux-iscsi.org>2018-01-18 01:21:23 -0800
commit45dc488c0ee19ba5cba7a67be473aeaf88a7447e (patch)
treea37b736ecadc936992f4fca4500ff2d1afc14e87 /drivers/target/target_core_user.c
parentc82b59e7c3f81059b1d280e21028c7ac8451dd52 (diff)
tcmu: fix cmd user after free
If we are failing the command due to a qfull timeout we are also freeing the tcmu command, so we cannot access it later to get the se_cmd. Note: The clearing of cmd->se_cmd is not needed. We do not check it later for something like determining if the command was failed due to a timeout. As a result I am dropping it. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_user.c')
-rw-r--r--drivers/target/target_core_user.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 511168bec159..3096257a00d9 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -1152,6 +1152,7 @@ static int tcmu_check_expired_cmd(int id, void *p, void *data)
return 0;
is_running = list_empty(&cmd->cmdr_queue_entry);
+ se_cmd = cmd->se_cmd;
if (is_running) {
/*
@@ -1177,8 +1178,6 @@ static int tcmu_check_expired_cmd(int id, void *p, void *data)
pr_debug("Timing out cmd %u on dev %s that is %s.\n",
id, udev->name, is_running ? "inflight" : "queued");
- se_cmd = cmd->se_cmd;
- cmd->se_cmd = NULL;
target_complete_cmd(se_cmd, scsi_status);
return 0;
}

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